Browsing by Author "Niculescu, S. I."
Now showing items 1-7 of 7
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A coupled model for healthy and cancerous cells dynamics in Acute Myeloid Leukemia
Avila, J. L.; Bonnet, C.; Özbay, Hitay; Clairambault, J.; Niculescu, S. I.; Hirsch, P.; Delhommeau, F. (IFAC, 2014)In this paper we propose a coupled model for healthy and cancerous cell dynamics in Acute Myeloid Leukemia. The PDE-based model is transformed to a nonlinear distributed delay system. For an equilibrium point of interest, ... -
Dwell-time computation for stability of switched systems with time delays
Caliskan, S. Y.; Özbay, Hitay; Niculescu, S. I. (IET, 2013)The aim of this study is to find an improved dwell time that guarantees the stability of switched systems with heterogeneous constant time-delays. Piecewise Lyapunov-Krasovkii functionals are used for each candidate system ... -
A new model of cell dynamics in Acute Myeloid Leukemia involving distributed delays
Avila, J. L.; Bonnet, C.; Clairambault, J.; Özbay, Hitay; Niculescu, S. I.; Merhi, F.; Tang, R.; Marie, J. P. (2012)In this paper we propose a refined model for the dynamical cell behavior in Acute Myeloid Leukemia (AML) compared to (Özbay et al, 2012) and (Adimy et al, 2008).We separate the cell growth phase into a sequence of several ... -
A numerical method for stability windows and unstable root-locus calculation for linear fractional time-delay systems
Fioravanti, A.R.; Bonnet, C.; Özbay, Hitay; Niculescu, S. I. (Elsevier, 2012-08-14)This paper aims to provide a numerical algorithm able to locate all unstable poles, and therefore the characterization of the stability as a function of the delay, for a class of linear fractional-order neutral systems ... -
On the analysis of a dynamical model representing gene regulatory networks under negative feedback
Ahsen, M. E.; Özbay, Hitay; Niculescu, S. I. (Wiley, 2014-07-25)In this work, stability analysis is performed for a cyclic dynamical model of gene regulatory networks involving time delays, under negative feedback. The model considered has nonlinearities with negative Schwarzian ... -
Preface
Ahsen, M. E.; Özbay, Hitay; Niculescu, S. I. (Springer Publishing Company, 2015)[No abstract available] -
Stability analysis of a dynamical model representing gene regulatory networks
Ahsen, M. E.; Özbay, Hitay; Niculescu, S. I. (2012)In this paper we perform stability analysis of a class of cyclic biological processes involving time delayed feedback. More precisely, we analyze the genetic regulatory network having nonlinearities with negative Schwarzian ...